lkml.org 
[lkml]   [2019]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] i2c: i2c-stm32f7: fix & reorder remove & probe error handling
Date
Add missing dma channels free calls in case of error during probe
and reorder the remove function so that dma channels are freed after
the i2c adapter is deleted.
Overall, reorder the remove function so that probe error handling order
and remove function order are same.

Fixes: 7ecc8cfde553 ("i2c: i2c-stm32f7: Add DMA support")

Signed-off-by: Alain Volmat <alain.volmat@st.com>
---
drivers/i2c/busses/i2c-stm32f7.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index d36cf08461f7..f8ef203dabfc 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -1980,6 +1980,11 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
pm_runtime_set_suspended(i2c_dev->dev);
pm_runtime_dont_use_autosuspend(i2c_dev->dev);

+ if (i2c_dev->dma) {
+ stm32_i2c_dma_free(i2c_dev->dma);
+ i2c_dev->dma = NULL;
+ }
+
clk_free:
clk_disable_unprepare(i2c_dev->clk);

@@ -1990,21 +1995,21 @@ static int stm32f7_i2c_remove(struct platform_device *pdev)
{
struct stm32f7_i2c_dev *i2c_dev = platform_get_drvdata(pdev);

- if (i2c_dev->dma) {
- stm32_i2c_dma_free(i2c_dev->dma);
- i2c_dev->dma = NULL;
- }
-
i2c_del_adapter(&i2c_dev->adap);
pm_runtime_get_sync(i2c_dev->dev);

- clk_disable_unprepare(i2c_dev->clk);
-
pm_runtime_put_noidle(i2c_dev->dev);
pm_runtime_disable(i2c_dev->dev);
pm_runtime_set_suspended(i2c_dev->dev);
pm_runtime_dont_use_autosuspend(i2c_dev->dev);

+ if (i2c_dev->dma) {
+ stm32_i2c_dma_free(i2c_dev->dma);
+ i2c_dev->dma = NULL;
+ }
+
+ clk_disable_unprepare(i2c_dev->clk);
+
return 0;
}

--
2.7.4
\
 
 \ /
  Last update: 2019-10-25 16:05    [W:0.043 / U:0.764 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site